fix: explicitly close all 8 streams in bidirectional test

- Test was only closing 4 streams, leaving 4 unclosed

- Extract streams passed to proxy and close them explicitly

- Prevents ResourceWarnings about unclosed MemoryObjectStreams

- Each stream pair has both send and receive ends that must be closed

Author: dgenio

tests/shared/test_proxy.py

@@ -114,6 +114,10 @@ async def test_proxy_bidirectional_forwarding(create_streams):
         ),
     ) = create_streams()
 
+    # Unpack the streams passed to proxy for cleanup
+    client_read, client_write = client_streams
+    server_read, server_write = server_streams
+
     try:
         # Create test messages
         client_request = JSONRPCRequest(jsonrpc="2.0", id="client_1", method="client_method", params={})
@@ -137,11 +141,15 @@ async def test_proxy_bidirectional_forwarding(create_streams):
                 received_at_client = await client_write_reader.receive()
                 assert received_at_client.message.root.id == "server_1"
     finally:
-        # Clean up test streams
+        # Clean up ALL 8 streams
         await client_read_writer.aclose()
         await client_write_reader.aclose()
         await server_read_writer.aclose()
         await server_write_reader.aclose()
+        await client_read.aclose()
+        await client_write.aclose()
+        await server_read.aclose()
+        await server_write.aclose()
 
 
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